The Mann River flows through the rugged landscapes of northern New South Wales, forming part of the Mann-Nymboida sub-catchment within the greater Clarence River system. This river is a place of genuine ecological significance, harboring the last viable breeding population of the endangered Eastern Freshwater Cod — a distinction that shapes nearly every aspect of fishing here. The river and its tributaries, including the Boyd River, wind through diverse riparian environments that support over 30 native freshwater fish species recorded across the broader Clarence Basin, making it one of the most biologically rich river systems in eastern Australia.